HW025FG Lineage Power, HW025FG Datasheet - Page 11

• Manufacturer Part Number: HW025FG
• Description: CONVR DC/DC 2.5/3.3V 25W OUT T/H
• Manufacturer: Lineage Power
• Series: HWr
• Type: Isolated with Remote On/Offr

Specifications of HW025FG

• Output: 3.3V, 2.5V
• Number Of Outputs: 2
• Power (watts): 25W
• Mounting Type: Through Hole
• Voltage - Input: 36 ~ 75V
• Package / Case: 9-DIP Module
• 1st Output: 3.3 VDC @ 4A
• 2nd Output: 2.5 VDC @ 4A
• Size / Dimension: 2.26" L x 2.14" W x 0.29" H (57.4mm x 54.4mm x 7.4mm)
• Power (watts) - Rated: 25W
• Operating Temperature: -40°C ~ 100°C
• Efficiency: 83%
• Approvals: CE, CSA, UL, VDE
• Product: Isolated
• Output Power: 13 W
• Input Voltage Range: 36 V to 75 V
• Output Voltage (channel 1): 3.3 V
• Output Current (channel 1): 4 A
• Output Voltage (channel 2): 2.5 V
• Output Current (channel 2): 4 A
• Isolation Voltage: 1.5 KV
• Package / Case Size: DIP
• Output Type: Isolated
• Output Voltage: 3.3 V
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• 3rd Output: -
• 4th Output: -
• Lead Free Status / Rohs Status: No

Data Sheet
April 2008
Feature Descriptions
Overcurrent Protection
To provide protection in a fault (output overload) condi-
tion, the unit is equipped with internal current-limiting
circuitry and can endure current limiting continuously.
At the point of current-limit inception, the unit enters
hiccup mode. The unit operates normally once the out-
put current is brought back into its specified range. The
average output current during hiccup is 10% I
Remote On/Off
Two remote on/off options are available. Positive logic
turns the module on during a logic high voltage on the
ON/OFF pin, and off during a logic low. Negative logic
turns the module off during a logic high and on during a
logic low. Negative logic, device code suffix "1", is the
factory-preferred configuration.
To turn the power module on and off, the user must sup-
ply a switch (open collector or equivalent) to control the
voltage (V
V
Logic low is 0V V
during a logic low is 1mA, the switch should be maintain
a logic low level whilst sinking this current.
During a logic high, the maximum V
the module is 15V, and the maximum allowable leakage
current at V
If not using the remote on/off feature:
I
I
Figure 18. Remote On/Off Implementation
Output Voltage Set-Point Adjustment (Trim)
Trimming allows the output voltage set point to be
increased or decreased, this is accomplished by
Lineage Power
IN
For negative logic, short the ON/OFF pin to V
For positive logic, leave ON/OFF pin open.
(-) terminal (see Figure 18).
on/off
on/off
)
between the ON/OFF terminal and the
= 15V is 50µA.
on/off
I
on/off
V
on/off
1.2V. The maximum I
HW025 Dual Positive Output-Series Power Modules: dc-dc Converters:
V
ON/OFF
V
IN
IN
(+)
(-)
on/off
generated by
COM
V
V
O1
O2
IN
O, max
on/off
(-)..
8-2800 (F)
.
36 Vdc to 75 Vdc Input, Dual Positive Outputs; 25W
connecting an external resistor between the TRIM pin
and either the VO(+) pin or the COM pin (see Figure 19).
Figure 19. Circuit Configuration to Trim
Connecting an external resistor (R
TRIM pin of the desired output and the COM pin
decreases the output voltage set point. To maintain set
point accuracy, the trim resistor tolerance should be
±0.1%.
The relationship between the output voltage and the trim
resistor value for a % reduction in output voltage is:
See Figures 20 & 21.
Connecting an external resistor (R
TRIM pin and the V
increases the output voltage set point.
For trim-up:
(V
on an AF)
See Figures 22 & 23.
V
V
O2
O1
Ox
R
R
refers to the nominal output voltage, i.e. 5.0V for V
trim-up
trim-up
V
V
O1
O2
V
ON/OFF
V
=
=
Output Voltage
IN
IN
R
R
(+)
(-)
trim-down
trim-down
5.11V
V
O
O2
V
1.225 %
1.225 %
(+) pin of the desired output
O
V
=
=
O1
(100+ %)
TRIM
COM
O
(+)
(100+ %)
511
100
%
%
- 6.11 k
- 1.33 k
-
-
trim-down
trim-up
511
100
R
R
%
%
trim-up
trim-down
) between the
) between the
- 6.11
- 1.33
LOAD
k
k
8-2739 (F)
11
O1